## 声明模型属性

然后，使用 `Field` 定义模型的属性：

{* ../../docs_src/body_fields/tutorial001_an_py310.py hl[11:14] *}

`Field` 的工作方式和 `Query`、`Path`、`Body` 相同，参数也相同。

/// note | 技术细节

实际上，`Query`、`Path` 都是 `Params` 的子类，而 `Params` 类又是 Pydantic 中 `FieldInfo` 的子类。

Pydantic 的 `Field` 返回也是 `FieldInfo` 的类实例。

`Body` 直接返回的也是 `FieldInfo` 的子类的对象。后文还会介绍一些 `Body` 的子类。

注意，从 `fastapi` 导入的 `Query`、`Path` 等对象实际上都是返回特殊类的函数。

///

 */
abstract class AbstractBuildScanInfoCollectingService : BuildService<AbstractBuildScanInfoCollectingService.Params>, OperationCompletionListener {
    /**
     * To be compatible with configuration cache, this field must be Serializable.
     */
    abstract val collectedInformation: Serializable

    interface Params : BuildServiceParameters {
        val monitoredTaskPaths: SetProperty<String>
    }

     * be created automatically.
     *
     * @param output The file to serialize the settings to, must not be {@code null}.
     * @param options The options to use for serialization, may be {@code null} to use the default values.
     * @param settings The settings to serialize, must not be {@code null}.
     * @throws IOException If the settings could not be serialized.
     */

    }

    /**
     * Create a remote download repository.
     *
     * @param id        the unique identifier of the repository
     * @param url       the URL of the repository
     * @param layout    the layout of the repository
     * @param snapshots the policies to use for snapshots
     * @param releases  the policies to use for releases
     */
    public DefaultArtifactRepository(
            String id,

import me.champeau.gradle.japicmp.report.Violation;

import java.util.Map;

public class NewIncubatingAPIRule extends AbstractGradleViolationRule {

    public NewIncubatingAPIRule(Map<String, Object> params) {
        super(params);
    }

    @Override
    public Violation maybeViolation(final JApiCompatibility member) {
        if (member instanceof JApiMethod || member instanceof JApiField || member instanceof JApiClass) {

     * Validate the specified settings.
     *
     * @param settings The settings to validate, must not be {@code null}.
     * @param problems The container used to collect problems that were encountered, must not be {@code null}.
     */
    void validate(Settings settings, SettingsProblemCollector problems);

    /**
     * Validate the specified settings.
     *
     * @param settings The settings to validate, must not be {@code null}.

            throws RepositoryMetadataResolutionException;

    /**
     * Deploy metadata to the remote repository.
     *
     * @param metadata             the metadata to deploy
     * @param localRepository      the local repository to install to first
     * @param deploymentRepository the remote repository to deploy to
     * @throws RepositoryMetadataDeploymentException in case of metadata deployment issue
     */

    }

    /**
     * Create an instance of the exception with all required information.
     *
     * @param originatingArtifact the artifact that was being resolved
     * @param resolvedArtifacts   artifacts that could be resolved
     * @param missingArtifacts    artifacts that could not be resolved
     * @param remoteRepositories  remote repositories where the missing artifacts were not found
     */

     * but only preserves problems that match the given filter.
     *
     * @param <P>           the type of problem
     * @param maxCountLimit the maximum number of problems to preserve
     * @param filter        predicate to decide which problems to record
     * @return a new filtered problem collector instance
     */
    @Nonnull

import importlib

import pytest
from fastapi.exceptions import FastAPIError

from ...utils import needs_py310


@pytest.mark.parametrize(
    "module_name",
    [
        pytest.param("tutorial003_04_py39"),
        pytest.param("tutorial003_04_py310", marks=needs_py310),
    ],
)
def test_invalid_response_model(module_name: str) -> None:
    with pytest.raises(FastAPIError):